import Vue from 'vue';
import Router from 'vue-router';

// 导入多个模块的路由规则
import approvalsRouter from './modules/approvals.js';
import departmentsRouter from './modules/departments';
import employeesRouter from './modules/employees';
import permissionRouter from './modules/permission';
import attendancesRouter from './modules/attendances';
import salarysRouter from './modules/salarys';
import settingRouter from './modules/setting';
import socialRouter from './modules/social';

Vue.use(Router);

/* Layout */
import Layout from '@/layout';

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'/'el-icon-x' the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */
//  静态路由
export const constantRoutes = [
  {
    path: '/login',
    component: () => import('@/views/login/index'),
    hidden: true,
  },

  {
    path: '/404',
    component: () => import('@/views/404'),
    hidden: true,
  },

  {
    path: '/',
    component: Layout,
    redirect: '/dashboard',
    children: [{
      path: 'dashboard',
      name: 'Dashboard',
      component: () => import('@/views/dashboard/index'),
      meta: { title: '首页', icon: 'dashboard' },
    }],
  },
  {
    path: '/import',
    component: Layout,
    hidden: true,
    children: [{
      path: '',
      name: 'Import',
      component: () => import('@/views/import/index.vue'),
    }],
  },

  // 404 page must be placed at the end !!!
  // 注意：这里只是放在了静态路由的后面，而不是动态路由的后面
  // { path: '*', redirect: '/404', hidden: true },
];

// 定义一个动态路由并且导出
export const asyncRoutes = [
  approvalsRouter,
  departmentsRouter,
  employeesRouter,
  permissionRouter,
  attendancesRouter,
  salarysRouter,
  settingRouter,
  socialRouter,
];

const createRouter = () => new Router({
  // mode: 'history', // require service support
  scrollBehavior: () => ({ y: 0 }),
  // routes: constantRoutes,
  // 将静态路由和动态路由进行临时合并
  // routes: [...constantRoutes, ...asyncRoutes],
  // 临时合并结束
  routes: [...constantRoutes],

});

const router = createRouter(); // 这里就是调用createRouter()函数实例化了路由。

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
// 重置路由的方法
export function resetRouter() {
  const newRouter = createRouter();
  router.matcher = newRouter.matcher; // reset router
}

export default router;
